docker-compose — Пример комплексной конфигурации

version: '3.8'

services:
  app:
    build: .
    ports:
      - "3000:3000"
    environment:
      NODE_ENV: production
      DB_HOST: db
      REDIS_HOST: redis
    depends_on:
      db:
        condition: service_healthy
      redis:
        condition: service_started
    networks:
      - frontend
    restart: unless-stopped

  db:
    image: postgres:15
    environment:
      POSTGRES_DB: myapp
      POSTGRES_USER: user
      POSTGRES_PASSWORD_FILE: /run/secrets/db_password
    volumes:
      - pg_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U user"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - frontend
    restart: unless-stopped

  redis:
    image: redis:7-alpine
    volumes:
      - redis_data:/data
    networks:
      - frontend
    restart: unless-stopped

networks:
  frontend:
    driver: bridge

volumes:
  pg_data:
  redis_data:

secrets:
  db_password:
    file: ./secrets/db_pass.txt